package com.kris.dev2;

import java.util.Date;



public class MapClass extends Date {
	
	
	public static void main(String[] args) {

		
		// stack 和heap
		
		
		
	}

	public void test(){
		System.out.println(super.getClass());
	}

	
	@Override
	public boolean after(Date when) {
		return super.after(when);
	}
	
	
}
